One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6)(7,14)(8,9)(10,11)(12,15)(13,18)(16,20)(17,19)(24,32)(28,33)(30,36)(34,35) involution — undirected(1,2,3,4)(7,15)(12,14)(16,19)(17,20)(21,22)(23,29)(24,28)(25,26)(27,31)(30,35)(32,33)(34,36)(6,11)(8,13)(12,14)(16,19)(22,26)(27,29)(28,33)(34,35) involution — undirected(5,7)(6,12)(8,16)(9,17)(10,15)(11,14)(13,19)(18,20)(21,23,25,31)(22,27,26,29)(24,30,32,36)(28,34,33,35)(5,8,10,13)(6,9,11,18)(7,16,15,19)(12,17,14,20)(21,22)(23,27)(24,28)(25,26)(29,31)(30,34)(32,33)(35,36)(5,9)(6,13)(7,17)(8,11)(10,18)(12,19)(14,16)(15,20)(21,24)(22,28)(23,30)(25,32)(26,33)(27,34)(29,35)(31,36) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.